Sanitary Silicone Sealant CERESIT CS 25 MicroProtect, terra, 280 ml

CERESIT CS 25 MicroProtect, terra, 280 ml is a sanitary silicone sealant formulated for indoor sanitary applications. Supplied in a 280 ml cartridge, this product offers a colored, flexible joint seal that resists moisture and fungal growth. It is intended for sealing connections around sanitary fixtures, tiled surfaces and profiles in bathrooms, kitchens and other wet rooms where a reliable, sanitary seal is required.

Advantages

The silicone provides long-lasting elasticity that accommodates slight movement in joints and maintains a watertight barrier. MicroProtect technology reduces the risk of mold and mildew growth on the sealed surface. The terra color blends with earth-tone tiles and fixtures for a discreet finish. The cartridge format is compatible with standard caulking guns for controlled application.

Suitable for

• Sealing joints between sanitary fixtures (bathtubs, sinks, shower trays) and walls
• Sealing perimeters of ceramic and porcelain tiles in bathrooms and kitchens
• Sealing connections to profiles and trims in wet rooms
• Indoor installations where mold and moisture resistance is required

When it may not be suitable

This sanitary silicone is formulated for indoor wet-area use and is not designed for structural glazing, load-bearing joints or exterior applications where prolonged UV exposure and extreme weather may occur. It may not adhere effectively to surfaces contaminated with oil, grease or loose particles, so surfaces must be properly prepared before application.

Key specifications

• Product type: sanitary silicone sealant
• Color: terra (earth tone)
• Volume: 280 ml cartridge
• Application: indoor wet rooms (bathrooms, kitchens, sanitary areas)
• Properties: flexible, moisture-resistant, mold-inhibiting formula
• Curing: neutral-acetoxy or neutral cure technology suitable for sanitary applications (fast skin formation and reliable sealing)

How to use

Ensure that all surfaces are clean, dry and free from dust, oil and old sealant residues. Cut the cartridge nozzle to the required bead size and insert the cartridge into a standard caulking gun. Apply the sealant in a continuous bead along the joint, maintaining steady pressure for an even finish. Smooth the bead with a tooling tool or wetted finger within the product’s skin formation time to ensure proper adhesion and appearance. Allow the sealant to cure fully according to temperature and humidity conditions before exposing to water.

What to consider before purchase

• Confirm the terra color matches tiles and fixtures in the installation area
• Verify compatibility with substrate materials (ceramic, porcelain, glazed surfaces, some plastics) and test on a small area if uncertain
• Check required cartridge volume and number of joints to determine quantity needed
• Consider ventilation and curing conditions in the room during and after application

Usage recommendations

For best results, apply at recommended temperatures, ensure joints are properly sized (typically 5–10 mm for sanitary joints), and avoid painting over the cured silicone. If painting is required, use compatible paint and test adhesion. Store unopened cartridges in a cool, dry place away from direct sunlight.